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Distribution, enrichment mechanism and risk assessment for fluoride in groundwater: a case study of Mihe-Weihe

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 6, doi: 10.1007/s11783-023-1670-8

Abstract:

● High fluorine is mainly HCO3·Cl-Na and HCO3

Keywords： Groundwater in the Mihe-Weihe River Basin     Distribution characteristics of fluorine     Factors influencingfluoride     Enrichment mechanism of fluorine     Hydrogeochemical modeling     Pollution and risk assessment    

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Water Diversion is Not to Blame for Phosphorus Enrichment in Taihu Lake

Zhiyuan Wang,Qiuwen Chen,Jianyun Zhang,Hanlu Yan,

Engineering doi: 10.1016/j.eng.2023.07.007

Abstract: The Water Diversion Project from the Yangtze River to Taihu Lake (WDYT) has been widely recognized as an urgent and effective engineering measure to increase water resources, ameliorate the hydrodynamics and water quality conditions, and safeguard the water supply of Taihu Basin. However, some previous studies claimed that WDYT has brought in allochthonous nutrients and should take responsibility for the dramatic increase in phosphorus loading of Taihu Lake in recent years, because Yangtze River has a higher average phosphorus concentration than Taihu Lake. To ensure correct public understanding and provide a critical response to the misconception about the source of phosphorus loading, we quantified contribution of water diversion from the Yangtze River to phosphorus loadings of Taihu Lake over the past twenty years. We reveal that WDYT only diverted 4.3% annually of total phosphorus input of Taihu Lake in the last decade and should not be responsible for the increase in phosphorus concentration and loading in Taihu Lake. We conclude that phosphorus input from the Huxi Region contribute 78% of phosphorus input of Taihu Lake and should be primarily responsible for the high phosphorus concentration of Taihu Lake. Our findings have provided constructive guidance for water resource management of Taihu Basin and phosphorus load control of the second stage of WDYT.
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Experimental investigation on possibility of oxygen enrichment by using gradient magnetic fields

CAI Jun, WANG Li, TONG Lige, SUN Shufeng, WU Ping

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 3,   Pages 271-276 doi: 10.1007/s11705-007-0049-x

Abstract: method that uses the interception effect of gradient magnetic field on oxygen molecules to realize enrichmentThus, continuous oxygen enrichment is realized.The enrichment degree of oxygen reaches 0.65% when the inlet and outlet air flows are 40 mL/min and 20When the gas temperature rises to 343 K, the enrichment degree drops to 0.32%; and when the maximal productdegree than other oxygen-enrichment methods using magnetic separation.
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the effect of nitrogen on mixed culture polyhydroxyalkanoate production toward high organic loading enrichment

Zhiqiang Chen, Lizhi Zhao, Ye Ji, Qinxue Wen, Long Huang

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 4, doi: 10.1007/s11783-019-1135-2

Abstract:

Enrichment history of PHA accumulating culture

Enrichment strategy toward higher PHA accumulation

Keywords： Polyhydroxyalkanoate (PHA)     Organic loading rate     Nitrogen content     Biomass growth     Enrichment history    

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Enrichment and transfer of polycyclic aromatic hydrocarbons (PAHs) through dust aerosol generation from

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 1, doi: 10.1007/s11783-023-1610-7

Abstract:

● Compositional patterns of PAHs in dust aerosol vary from soil during dust generation.

Keywords： Dust aerosols     Enrichment factors (EFs)     Polycyclic aromatic hydrocarbons (PAHs)    

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Ether-/Ester-/Fluorine-Rich Binding Emulsion Formula for Lithium-Ion Batteries Article

Xianqing Zeng, Donglin Han, Zeheng Li, Hongxun Wang, Gu Wu, Yong Deng, Kai Liu, Li Xie, Chengdu Liang, Min Ling, Yuchuan Huang

Engineering 2022, Volume 19, Issue 12,   Pages 199-206 doi: 10.1016/j.eng.2022.05.020

Abstract: properties, stability, and compatibility with the electrolyte solution, and design an ether-/ester-/fluorine-rich

Keywords： Silicon anode     Emulsion copolymerization     Fluorine atom     Ether     Ester    

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Recent Advances in 19Fluorine Magnetic Resonance Imaging with Perfluorocarbon Emulsions Review

Anne H. Schmieder,Shelton D. Caruthers,Jochen Keupp,Samuel A. Wickline,Gregory M. Lanza

Engineering 2015, Volume 1, Issue 4,   Pages 475-489 doi: 10.15302/J-ENG-2015103

Abstract:

The research roots of 19fluorine (19F) magnetic resonance imaging (MRI) date

Keywords： fluorine     magnetic resonance imaging (MRI)     dual-tuned coil     perfluorocarbon     angiogenesis     cell labeling    

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Mercury enrichment in

Chunhao Dai, Pufeng Qin, Zhangwei Wang, Jian Chen, Xianshan Zhang, Si Luo

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 1, doi: 10.1007/s11783-017-0892-z

Abstract: Mercury enrichment in response to elevated atmospheric mercury concentrations in the organs of rape (Mercury enrichment in response to elevated atmospheric mercury concentrations in the organs of rape (

Keywords： Open top chamber     Gaseous elemental mercury (GEM)     Soil Mercury     Brassica napus    

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Shale gas enrichment factors and the selection and evaluation of the core area

Wang Shejiao,Yang Tao,Zhang Guosheng,Li Denghua,Chen Xiaoming

Strategic Study of CAE 2012, Volume 14, Issue 6,   Pages 94-100

Abstract: Based on the analysis of shale gas reservoir characteristics and the enrichment factors we discuss the

Keywords： core area     selection and evaluation     enrichment factors     marine shale     shale gas    

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Enhanced separation of tetrafluoropropanol from water via carbon nanotubes membranes: insights from molecular dynamics simulations

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 11, doi: 10.1007/s11783-023-1740-y

Abstract:

● MD simulations unveil the transport mechanism for TFP-water mixture

Keywords： Fluorinated alcohol     Carbon nanotube     Molecular simulation     Fluorine modified    

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Effective enrichment of Zn from smelting wastewater via an integrated Fe coagulation and hematite precipitation

Zhan Qu, Ting Su, Yu Chen, Xue Lin, Yang Yu, Suiyi Zhu, Xinfeng Xie, Mingxin Huo

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 6, doi: 10.1007/s11783-019-1178-4

Abstract: The major mechanism for Fe removal was the hydrolysis of ferric nitrate into hematite, which was promoted

Keywords： Smelting wastewater     Hydrothermal     Hematite precipitation     Heavy metals    

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Enrichment of CO from syngas with Cu(I)Y adsorbent by five-bed VPSA

Shuna LI, Huawei YANG, Donghui ZHANG

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 4,   Pages 472-481 doi: 10.1007/s11705-013-1351-4

Abstract: Cu(I)Y adsorbent was prepared by reduction of Cu(II)Y which was prepared by ion exchange between the NaY zeolite and a solution of Cu(II) chloride. The dynamic adsorption capacity of Cu(I)Y for CO was calculated by adsorption breakthrough curve measured on a fixed bed at 30°C and 0.006 MPa (g) of CO partial pressure. The calculated CO adsorption capacity was 2.14 mmol/g, 37.5 times as much as that of NaY zeolite. The adsorption breakthrough curve experiment was also simulated with Aspen Adsorption software and the results were approximately consistent with experimental results. Then a five-bed VPSA process for separating CO from syngas on this adsorbent was dynamically simulated with Aspen Adsorption software with the adsorption pressure of 0.68 MPa (g) and the desorption pressure of -0.075 MPa (g). The results showed that CO was enriched from 32.3% to 95.16%–98.12%, and its recovery was 88.47%–99.44%.

Keywords： Cu(I)Y adsorbent     breakthrough curve     desorption     VPSA     simulation    

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Key issues in development of offshore natural gas hydrate

Shouwei ZHOU, Qingping LI, Xin LV, Qiang FU, Junlong ZHU

Frontiers in Energy 2020, Volume 14, Issue 3,   Pages 433-442 doi: 10.1007/s11708-020-0684-1

Abstract: The study of the description and quantitative characterization of abundance in hydrate enrichment zone

Keywords： exploitation offshore     diagenetic and non-diagenetic hydrate     solid-state fluidization method     dessert in enrichment    

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tower bipolar electro-flocculation including the removal of phosphorus, turbidity, sulfion, and oxygen enrichment

Huan He, Qinjin Yu, Chaochao Lai, Chen Zhang, Muhan Liu, Bin Huang, Hongping Pu, Xuejun Pan

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 2, doi: 10.1007/s11783-020-1310-5

Abstract: . • An aluminum bipolar electrode gave the best oxygen enrichment and pollutant removal. • Changes of

Keywords： Black-odorous water     Bipolar electrodes     Flocculation     Floatation     Oxygen enrichment     Turbidity    

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Theory and method of mechanism system design

Huijun ZOU, Qinghua LIANG, Qing ZHANG

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4,   Pages 399-411 doi: 10.1007/s11465-010-0116-8

Abstract: Conceptual design is the most critical and creative phase of design. Recently, increasing attention has been directed to supporting conceptual-level computer aided creative design and its theories and methodologies. Specifically, for conceptual design of mechanical products, this paper presents a novel function solving model for mechanical product design and highlights the importance of systematic synthesis to achieve creative design. Then it builds a framework as a function-effect-process-action- mechanisms (FEPAM) mapping process, which enables creative design on the basis of conceiving different action schemes. After that, several key points are elaborated including 1) representing and decomposition methods of functions and motion behaviors; 2) action scheme representing method based on network plan techniques; and 3) variation and creation methods based on action scheme transformations.

Keywords： mechanism system creative design     process model     function solving model     process action procedure     mechanismsknowledge base     principle of mechanism system composition    

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Title Author Date Type Operation

Distribution, enrichment mechanism and risk assessment for fluoride in groundwater: a case study of Mihe-Weihe

Journal Article

Water Diversion is Not to Blame for Phosphorus Enrichment in Taihu Lake

Zhiyuan Wang,Qiuwen Chen,Jianyun Zhang,Hanlu Yan,

Journal Article

Experimental investigation on possibility of oxygen enrichment by using gradient magnetic fields

CAI Jun, WANG Li, TONG Lige, SUN Shufeng, WU Ping

Journal Article

the effect of nitrogen on mixed culture polyhydroxyalkanoate production toward high organic loading enrichment

Zhiqiang Chen, Lizhi Zhao, Ye Ji, Qinxue Wen, Long Huang

Journal Article

Enrichment and transfer of polycyclic aromatic hydrocarbons (PAHs) through dust aerosol generation from

Journal Article

Ether-/Ester-/Fluorine-Rich Binding Emulsion Formula for Lithium-Ion Batteries

Xianqing Zeng, Donglin Han, Zeheng Li, Hongxun Wang, Gu Wu, Yong Deng, Kai Liu, Li Xie, Chengdu Liang, Min Ling, Yuchuan Huang

Journal Article

Recent Advances in 19Fluorine Magnetic Resonance Imaging with Perfluorocarbon Emulsions

Anne H. Schmieder,Shelton D. Caruthers,Jochen Keupp,Samuel A. Wickline,Gregory M. Lanza

Journal Article

Mercury enrichment in

Chunhao Dai, Pufeng Qin, Zhangwei Wang, Jian Chen, Xianshan Zhang, Si Luo

Journal Article

Shale gas enrichment factors and the selection and evaluation of the core area

Wang Shejiao,Yang Tao,Zhang Guosheng,Li Denghua,Chen Xiaoming

Journal Article

Enhanced separation of tetrafluoropropanol from water via carbon nanotubes membranes: insights from molecular dynamics simulations

Journal Article

Effective enrichment of Zn from smelting wastewater via an integrated Fe coagulation and hematite precipitation

Zhan Qu, Ting Su, Yu Chen, Xue Lin, Yang Yu, Suiyi Zhu, Xinfeng Xie, Mingxin Huo

Journal Article

Enrichment of CO from syngas with Cu(I)Y adsorbent by five-bed VPSA

Shuna LI, Huawei YANG, Donghui ZHANG

Journal Article

Key issues in development of offshore natural gas hydrate

Shouwei ZHOU, Qingping LI, Xin LV, Qiang FU, Junlong ZHU

Journal Article

tower bipolar electro-flocculation including the removal of phosphorus, turbidity, sulfion, and oxygen enrichment

Huan He, Qinjin Yu, Chaochao Lai, Chen Zhang, Muhan Liu, Bin Huang, Hongping Pu, Xuejun Pan

Journal Article

Theory and method of mechanism system design

Huijun ZOU, Qinghua LIANG, Qing ZHANG

Journal Article